BOOKSCHOOSE THE WORD WHOSE UNDERLINED PART IS PRONOUNCED DIFFERENTLY...

38. - TONG HOP BAI TAP TRAC NGHIEM TU LUAN TIENG ANH LOP 12 UNIT 11 BOOKS CO DAP AN
TONG HOP BAI TAP TRAC NGHIEM TU LUAN TIENG ANH LOP 12 UNIT 11 BOOKS CO DAP AN

38. A challenging book ________.

a. helps you to improve your vocabulary

b. is only for primary pupils

c. can translate all new words

d. contains a lot of difficult vocabulary